<template>
  <div style="border: 1px solid #ccc">
    <Toolbar
      style="border-bottom: 1px solid #ccc"
      :editor="editorRef"
      :defaultConfig="toolbarConfig"
      :mode="mode"
    />
    <Editor
      style="height: 500px; overflow-y: hidden;"
      :default-html="valueHtml"
      :defaultConfig="editorConfig"
      :mode="mode"
      @onCreated="handleCreated"
    />
  </div>
</template>

<script>
import '@wangeditor/editor/dist/css/style.css' // 引入 css

import { onBeforeUnmount, ref, shallowRef, onMounted, watch } from 'vue'
import { Editor, Toolbar } from '@wangeditor/editor-for-vue'

export default {
  components: { Editor, Toolbar },
  props: {
    modelValue: {
      type: String,
      default: ''
    }
  },
  setup(props) {
    // 编辑器实例，必须用 shallowRef
    const editorRef = shallowRef()

    // 内容 HTML，使用 props 的值初始化
    const valueHtml = ref(props.modelValue)

    // 模拟 ajax 异步获取内容
    onMounted(() => {
        setTimeout(() => {
            valueHtml.value = '<p>模拟 Ajax 异步设置内容</p>'
        }, 1500)
    })

    const toolbarConfig = {}
    const editorConfig = { placeholder: '请输入内容...' }

    // 组件销毁时，也及时销毁编辑器
    onBeforeUnmount(() => {
        const editor = editorRef.value
        if (editor == null) return
        editor.destroy()
    })

    const handleCreated = (editor) => {
      editorRef.value = editor // 记录 editor 实例，重要！
    }

    // 监听 props 变化，更新编辑器内容
    watch(() => props.modelValue, (newVal) => {
      valueHtml.value = newVal
    })

    // 监听编辑器内容变化，更新外部 props
    watch(valueHtml, (newVal) => {
      props.emit('update:modelValue', newVal)
    })

    return {
      editorRef,
      valueHtml,
      mode: 'default', // 或 'simple'
      toolbarConfig,
      editorConfig,
      handleCreated
    };
  }
}
</script>